int LEDS[] = {3,5,7};
int BUTTONS[] = {2,4,6};
void setup() {
  // put your setup code here, to run once:

for(int pin = 0;pin<3;pin++){
    pinMode(LEDS[pin],OUTPUT);
    pinMode(BUTTONS[pin],INPUT);
  }

}

void loop() {
  // put your main code here, to run repeatedly:
for(int led = 0;led<3;led++){
     digitalWrite(LEDS[led],HIGH);
  }
}
